Not all our bags have padded inserts - for example the 72, Hadley Digital, S2, S3, S4, 550, 225, 335, 445, 555, 107, 207, 307, 307L, f2.8, f1.4, f8, L2, Airline, Pola, Compact, Galbin and some of our other bags have the padding sewn into them. On these bags you don't need a padded insert.
An exception to this is that some the bags listed above (such as old 550, 225, 335, 445, System 1 bags etc) didn't have padded linings sewn in when they were first made (imagine the 70s and 80s) - they came with something called a 'SystemFlex Divider Set' which can sometimes get damaged or lost. If you are in this situation we can supply a replacement SystemFlex set or have your bag back to the factory to sew in a padded lining - both these would carry a fee. If you are interested in this please contact us to discuss the costs and options (and include some photos of the inside and outside of your bag!).